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claude-haiku-4-5-20251001 API pricing & access

claude-haiku-4-5-20251001 API pricing: $1 per 1M tokens. claude-haiku-4-5-20251001. Supports text, image input and text output. Listed specificatio…

claude-haiku-4-5-20251001 API access

claude-haiku-4-5-20251001. Supports text, image input and text output. Listed specifications follow public vendor documentation. Available features and limits depend on the selected serving channel.

Compare supported API endpoints and capabilities, then access claude-haiku-4-5-20251001 through the unified API gateway.

Category: text
Context length: 200000 tokens
Maximum output: 64000 tokens
Supported APIs: Anthropic Messages API, OpenAI Chat Completions API
API endpoints: POST /v1/messages, POST /v1/chat/completions
Input modalities: text, image
Output modalities: text
Capabilities: vision, reasoning

claude-haiku-4-5-20251001 API pricing

Base input price: $1 per 1M tokens
Base output price: $5 per 1M tokens

Base prices are shown in USD before group-specific adjustments. Open the live pricing page for current access-group prices.

About claude-haiku-4-5-20251001

claude-haiku-4-5-20251001 is the pinned Haiku 4.5 snapshot for text and image input with text output. Anthropic currently lists it as active legacy, providing a version reference for existing classification, extraction and question-answering workloads.

This version uses manually enabled extended thinking with a token budget rather than adaptive thinking. The official convenience alias claude-haiku-4-5 resolves to this snapshot; migration still requires output and route checks.

Official reference, checked 2026-10-14.

Use cases and prompting

Define labels, borderline examples and an unknown label, then inspect classification errors.
Provide field definitions and null rules and validate each extracted field.
Check the thinking budget against the output budget and retain cases with thinking on and off.
Compare the same test cases with claude-haiku-5-5; check request and response formats in the API documentation.

How to call claude-haiku-4-5-20251001

claude-haiku-4-5-20251001 is served through tbuy's unified gateway. Existing OpenAI or Anthropic SDK code keeps working: point base_url at https://modelsok.com and use your tbuy API key.

curl (OpenAI-compatible)

curl https://modelsok.com/v1/chat/completions \
  -H "Authorization: Bearer $API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model": "claude-haiku-4-5-20251001", "messages": [{"role": "user", "content": "Hello"}]}'

Python (openai SDK)

from openai import OpenAI

client = OpenAI(base_url="https://modelsok.com/v1", api_key="YOUR_API_KEY")
response = client.chat.completions.create(
    model="claude-haiku-4-5-20251001",
    messages=[{"role": "user", "content": "Hello"}],
)
print(response.choices[0].message.content)

Python (anthropic SDK)

from anthropic import Anthropic

client = Anthropic(base_url="https://modelsok.com", api_key="YOUR_API_KEY")
message = client.messages.create(
    model="claude-haiku-4-5-20251001",
    max_tokens=1024,
    messages=[{"role": "user", "content": "Hello"}],
)
print(message.content[0].text)

Frequently asked questions about claude-haiku-4-5-20251001

What is claude-haiku-4-5-20251001?

claude-haiku-4-5-20251001. Supports text, image input and text output. Listed specifications follow public vendor documentation. Available features and limits depend on the selected serving channel.

How do I call claude-haiku-4-5-20251001?

Create an API key with access to claude-haiku-4-5-20251001, then use the exact model ID and a supported endpoint from the API access section. Request fields depend on the selected endpoint.

How is claude-haiku-4-5-20251001 priced?

Pricing depends on the selected provider group and the model billing unit. Refer to the current input, output, request, or media prices in the pricing section.

What is the context window of claude-haiku-4-5-20251001?

The model catalog lists a context window of 200000 tokens. Check the selected endpoint for request limits.

What is the maximum output of claude-haiku-4-5-20251001?

The model catalog lists a maximum output of 64000 tokens. Your request settings may set a lower limit.

How should I evaluate claude-haiku-4-5-20251001 for my project?

Start with the use cases and prompting guidance on this page, then evaluate the model with representative inputs from your project.

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